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Author : Geological Survey (U.S.).
Publisher : Unknown
Page : 30 pages
File Size : 55,8 Mb
Release : 1978
Category : Geology
ISBN : MINN:31951T00157724X
Author : Anonim
Publisher : Unknown
Page : 470 pages
File Size : 47,8 Mb
Release : 1995
Category : Geology
ISBN : MINN:31951P00975020F
Author : Anonim
Publisher : Unknown
Page : 60 pages
File Size : 48,5 Mb
Release : 1984
Category : Geology
ISBN : MINN:31951T001549066
Author : Geological Survey (U.S.)
Publisher : Unknown
Page : 308 pages
File Size : 50,7 Mb
Release : 1977
Category : Geology
ISBN : UOM:39015049927554
Author : Anonim
Publisher : Unknown
Page : 64 pages
File Size : 45,6 Mb
Release : 2001
Category : Geology
ISBN : 0607984910
Author : Geological Survey (U.S.)
Publisher : Unknown
Page : 244 pages
File Size : 55,9 Mb
Release : 2024-05-11
Category : Geology
ISBN : IND:30000066232236
Author : Anonim
Publisher : Unknown
Page : 72 pages
File Size : 45,7 Mb
Release : 2003
Category : Geology
ISBN : OCLC:777393339
Author : Anonim
Publisher : Unknown
Page : 646 pages
File Size : 50,7 Mb
Release : 1971
Category : Geology
ISBN : UCBK:C064458213
Author : U. S. Geological Survey Staff
Publisher : Cascade Geographic Society
Page : 58 pages
File Size : 44,9 Mb
Release : 1998-01-01
Category : Electronic
ISBN : 0899047297
Author : U. S. Geological Survey Staff
Publisher : Cascade Geographic Society
Page : 54 pages
File Size : 55,9 Mb
Release : 1998-02-01
Category : Electronic
ISBN : 0899047866
Author : Geological Survey (U.S.)
Publisher : Unknown
Page : 76 pages
File Size : 53,9 Mb
Release : 2002
Category : Geology
ISBN : SRLF:D0010031318
Author : D.R. Helsel,R.M. Hirsch
Publisher : Elsevier
Page : 546 pages
File Size : 46,7 Mb
Release : 1993-03-03
Category : Mathematics
ISBN : 0080875084
Data on water quality and other environmental issues are being collected at an ever-increasing rate. In the past, however, the techniques used by scientists to interpret this data have not progressed as quickly. This is a book of modern statistical methods for analysis of practical problems in water quality and water resources. The last fifteen years have seen major advances in the fields of exploratory data analysis (EDA) and robust statistical methods. The 'real-life' characteristics of environmental data tend to drive analysis towards the use of these methods. These advances are presented in a practical and relevant format. Alternate methods are compared, highlighting the strengths and weaknesses of each as applied to environmental data. Techniques for trend analysis and dealing with water below the detection limit are topics covered, which are of great interest to consultants in water-quality and hydrology, scientists in state, provincial and federal water resources, and geological survey agencies. The practising water resources scientist will find the worked examples using actual field data from case studies of environmental problems, of real value. Exercises at the end of each chapter enable the mechanics of the methodological process to be fully understood, with data sets included on diskette for easy use. The result is a book that is both up-to-date and immediately relevant to ongoing work in the environmental and water sciences.
Author : Morris Mordecai Thompson
Publisher : Unknown
Page : 288 pages
File Size : 55,5 Mb
Release : 1981
Category : Cartography
ISBN : UCR:31210003730882
Author : K. J. Schulz
Publisher : Geological Survey
Page : 868 pages
File Size : 55,9 Mb
Release : 2017
Category : Industrial minerals
ISBN : 1411339916
As the importance and dependence of specific mineral commodities increase, so does concern about their supply. The United States is currently 100 percent reliant on foreign sources for 20 mineral commodities and imports the majority of its supply of more than 50 mineral commodities. Mineral commodities that have important uses and face potential supply disruption are critical to American economic and national security. However, a mineral commodity's importance and the nature of its supply chain can change with time; a mineral commodity that may not have been considered critical 25 years ago may be critical today, and one considered critical today may not be so in the future. The U.S. Geological Survey has produced this volume to describe a select group of mineral commodities currently critical to our economy and security. For each mineral commodity covered, the authors provide a comprehensive look at (1) the commodity's use; (2) the geology and global distribution of the mineral deposit types that account for the present and possible future supply of the commodity; (3) the current status of production, reserves, and resources in the United States and globally; and (4) environmental considerations related to the commodity's production from different types of mineral deposits. The volume describes U.S. critical mineral resources in a global context, for no country can be self-sufficient for all its mineral commodity needs, and the United States will always rely on global mineral commodity supply chains. This volume provides the scientific understanding of critical mineral resources required for informed decisionmaking by those responsible for ensuring that the United States has a secure and sustainable supply of mineral commodities.
Author : U. S. Geological Survey Staff
Publisher : Cascade Geographic Society
Page : 160 pages
File Size : 43,7 Mb
Release : 1997
Category : Electronic
ISBN : 0899045413